circulating pumps的用法和樣例：
例句
- With the common problems in projects, presents the optimal design of circulating pumps.
結合工程常見問題，提出了循環水泵的最優化設計。 - Economics is studied on steam injector substituting the tube-shell heat exchanger and the circulating pump in the heating system of the thermal power plant.
針對熱電廠供熱系統採用升壓加熱裝置改造熱網加熱器和循環水泵的可行性和經濟性開展了研究。
